Zahari Z Zainal, Rosnina Y, Wahid H, Jainudeen M R
Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Selangor, Malaysia.
Anat Histol Embryol. 2002 Dec;31(6):350-4. doi: 10.1046/j.1439-0264.2002.00416.x.
The Sumatran rhinoceros (Dicerorhinus sumatrensis) is the smallest of all the rhino species. It is one of the rarest mammals in the world and is in imminent danger of extinction. A study was carried out on seven wild-caught females, three wild-caught males and one captive born female Sumatran rhinoceros at the Sumatran Rhinoceros Breeding Centre in Sungai Dusun, Selangor, Malaysia, beginning 1990. As a result of the paucity of scientific information on the reproductive biology of the Sumatran rhinoceros, this study was conducted to obtain information, which could assist in the captive breeding of this endangered and near extinct species. The anatomy of the reproductive system was based on two post-mortem specimens and transrectal real-time ultrasonography in six adult females. Genitalia of the Sumatran rhinoceros were similar to those of other species of rhinoceroses. The cervix consisted of several folds, the uterus was bicornuate with a short body and prominent horns and the ovaries were completely covered by the fimbriated end of the fallopian tube. The internal genitalia could be imaged by ultrasonography. The testes were located within a pendulous scrotum. Two lateral projections were located at the base of the penis. A well-defined process glandis was present at the tip of the penis. The accessory sex glands and the testes could be imaged by ultrasonography.
苏门答腊犀牛（双角犀属苏门答腊种）是所有犀牛物种中体型最小的。它是世界上最稀有的哺乳动物之一，面临着迫在眉睫的灭绝危险。1990年起，在马来西亚雪兰莪州双溪杜顺的苏门答腊犀牛繁育中心，对7只野生捕获的雌性、3只野生捕获的雄性以及1只圈养出生的雌性苏门答腊犀牛进行了一项研究。由于关于苏门答腊犀牛生殖生物学的科学信息匮乏，开展此项研究以获取有助于该濒危且近乎灭绝物种圈养繁殖的信息。生殖系统的解剖结构基于两例尸检标本以及对6只成年雌性犀牛的经直肠实时超声检查。苏门答腊犀牛的生殖器与其他犀牛物种的相似。子宫颈由几道褶皱构成，子宫为双角形，体短且角突出，卵巢完全被输卵管的伞端覆盖。内部生殖器可用超声成像。睾丸位于下垂的阴囊内。阴茎基部有两个侧向突起。阴茎顶端有一个界限分明的阴茎头隆突。附属性腺和睾丸可用超声成像。
